Refining-engine.



No. 844,063. PATENTED FEB. 12 1907. S. R. WAGG.

REEINING ENGINE.

APPLICATION FILED MAY 24.1905.

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S. R. WAGG.

REPINING ENGINE.

APPLICATION FILED MAY24.1905.

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ITED STATES PATENT OFFICE. SOLOMON R. WAQG, OF APPLETON, WISCONSIN.

REFINING- ENGINE.

Specification of Letters Patent.

Patented Feb. 12, 1907.

Application filed May 24, 1905. Serial No- 262,071.

To all whom it may conccrn Be it known that I, SOLOMON It. WAGG, a citizen of the United States, residing at Appleton, in the county of Outagamie and State of Wisconsin, have invented new and useful Improvements in Refining-Engines, of which the following is a specification.

This invention'relates to certain new and useful improvements in refining-engines, and particularly to a refining-engine employing stone bars, and has for its objects to provide a novel means for securing" the bars about the plug of the engine, to provide a novel construction of stone bar, to provide a novel arrangement of stone and steel bars on the same plug, to provide a novel arrangement of the stone bars about the shell of the engine, and to provide improvements in the shell whereby 'to permit a free inflow of stock to the interior of the engine.

In order that the invention may be clearly understood, I have illustrated the same in the accompanying drawings, in which-- Figure 1 is a transverse sectional view through the shell of an engine constructed according to my invention, the plug being shown therein in elevation. Fig. 2 is a side elevation of the plug with the blades and bars removed. Fig. 3 is a section on the line 3 3 of Fig. 2. Fig. 4 is a section through the plug on the line 4 4 of Fig. 1. Fig. 5 is a section through the plug on the line 5 5 of Fig. 1. Fig. 6 is an end elevation looking at the smaller end of the engine, the cap or 7 is a sectional horizontal cover of the same being removed; and Fig. plan view showing the interior of the shell.

Referring now to the drawings, 4 indicates the plug, which is provided with a series of longitudinal ribs 5, affording between them grooves 6. Said ribs and grooves extend from the larger end of the plug toward the smaller end, about three-fourths of the length of the plug. The remaining portion of the plug is provided around its periphery with a series of grooves 7, relatively narrow as compared with the groove 6 and in line therewith. 8 indicates the stone bars of'the plug, which are designed to be secured in the grooves 6. To this end one side of each of the ribs 5 is referably roughened or grooved throughout its length, as indicated at 9 in Fig. 3. A strip of soft material 10such as I Wood, lead, or copper-is placed in the 1 position about the plug by means of Wedgegroove 6 adjacent to the roughened side 9 of the rib, and the stone bar 8 is placed in the groove with one of its sides adjacent to the soft metal or wooden strip 10. When this is done, a s ace will be provided between the other side of the bar 8 and the adj acont rib 5, and in this space I insert, one at a time, strips 11, of soft metal or wood, which are firmly pressed or swaged in such space so as to firmly bind the bar 8 in position that is to say, the sides of the bar 8 being rough, owing to its composition, and one side of each rib being roughened or provided with grooves, as above described, when the strips 11 are swaged in place the strip 10 of soft material will be firmly embedded in the fissures of the adjacent rib and the stone bar 8, and thus the bar will be held securely in place. I can, of course, roughen or groove the side of the rib adjacent to the swaging 11, so that said swaging can take into the fissures of the rib as well as into the fissures of the-bar, but ordinarily this is not necessary.

The manner of fastening the bars 8 in place above described insures a very firm union between the ribs and the bars, and there is no liability of the securing means working loose. I have found that if it be attempted to pour hot metal into the s aces afforded between the bars 8 and the ri s on either side that there is a liability of the bar cracking by reason. of sudden expansion due to the heat of the metal, and I have also found if cement be employed it is liable to disintegrate and crumble after the engine has been used for some time, so that the bars 3 work loose. Preferably I em loy metal strips on each side of the stone liars for securing them in position, but, as indicated in the specification, wood may be advantageously employed for this purpose. 12 indicates the short metal bars, which are inserted in the grooves 7 at the small end of the plug and are in line with the stone bars 8 and abut against the ends of the same, as shown by Fig. 1. Preferably I provide at the striking side of each of these metal bars a strip of wood 13, which is for the purpose of protecting such bar from the action of acid, the action of which I have found is very much more pronounced on the striking side of the bar than at any other part thereof. The bars 12 are preferably held in blocks 14. I do not, however, limit myself to any particular means for securing the metal bars in position about the plug.

struction is that steel bars being much stronger than stone bars they are not liable to be broken by impact with the lumpy knotty, and tough stock as it first enters the engine, and by first treating this {stock with metal bars said stock is so reduced before reaching the stone bars that the chances of said bars being broken by the stock or by any hard foreign substance which it may contain are reduced to the minimum.

In the ordinary refining-engine the metal bars are of uniform width throughout, and if it be attempted to increase the width of these bars, especially at the larger end of the plug, the result is the production of a stock of an inferior character desi ated in the art as greasy or slow. 11 actual use I have found that stone bars possess very decided advantages over metal bars in many particulars, the principle one of which is that they have a tendency to rub or draw the stock out in contradistinction to cutting it, this drawing or rubbin of the stock being very desirable. I have a lso found that this effect may be increased by increasing the width of the stone bars as the larger end of the plug is approached, such construction affording an ever-widening surface of stone to exert its rubbing or brushing action upon the stock, such increase in the width of the bars being unattended with any of the objectionable results accompanying the widening of metal bars. According to this invention, therefore, I employ stone bars having at their smaller end 15 a width of about one inch and at their opposite end 16 or that located at the larger end of the plug a width of about two inches. A similar construction of bar is employed in the shell, as indicated in Fig. 7. Such construction of bar as I have indicated above results in practice in the production of a very superior stock.

One of the objects of this invention is to obviate to a great extent the tendency of the plug to wear down below the center and draw awayfrom and cease to work against the top bars to the same degree as it works against the bottom bars of the shell. In the ordinary refining-engine this objectionable condition uniformly arises and cannot well be avoided. According to this invention I make the stone bars 17 in the lower half of the. shell much wider than the bars 18 in the upper half, and I make the spaces 19 between shell will have a tendency to be raised in operation, whereas if the width of the bars in the shell is uniform throughout the pressure upon the plug will be the same at all points,

and there will be nothing to offset the weight f the plug, which, as above noted, tends to wear down and work away from the bars in the upper part of the shell.

In my Patent No. 722,060, dated March 3, 1903, I provide for this contingency when metal bars are employed by providing a greater number of bars in the lower part of the shell. In the present case I secure the same result by increasing the width of the stone bars in the lower half of the shell, something which could not advantageously be done with metal bars, for the reasons above indicated.

The inlet of a refining-engine is at the smaller end of the shell, as well known, and due to the contracted area of the shell at this end and to the fact that the bars of the plug and shell rotate in close proximity the stock does not enter the engine very freely.

In order to increase to some extent the free entrance of the stock, I provide in the smaller end of the shell 21' a tapered enlargement 22, locating said enlargement at or about the point where the inlet-pipe of the engine connects with the shell, and thereby increasing the area in which the incoming stock is caught up by the bars of the revolving plug and carried forward.

It will be understood by those skilled in the art to which my invention relates that the improvements herein described may be employed when applicable in connection with an ordinary beating or Holland engine'without departing from the spirit of the invention.

It will be obvious that I can increase the width of the enlargement 22 to any desired extent, or I can provide several of said enlargements, as may be desired.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-- 1. In a refining-engine employing a conical shell, a series of bars secured about the interior of the shell and extending longitudinally thereof, said bars gradually increasing in width toward the larger end of the shell.

2. In a refining-engine of the class described, a series of stone bars arranged around the interior of the shell of the engine, the bars in the lower portion of the shell beioo ing of greater width than the bars in the upi wood located at the striking side of each of per portion. said bars and extending to the cutting edge 3. In a refining-engine of the class dethereof for the purpose described. scribed, a series of stone bars arranged In testimony whereof I have hereunto set I5 around the interior of the shell of the engine, my hand in presence of two subscribing witthe spaces between the bars in the upper pornesses.

tion of the shell being greater in width than the spaces between the bars in the lower por- I SOLOMON WAGG Lion of the shell. Witnesses:

GEO. H. PEERENBooM,

4. In a refining-engine, a plug provided I P. L. SCHUELLER.

with a series of metal bars, and a strip of l 

